Groff Upper Dam dam
Groff Upper Dam
Groff Upper Dam, located in Miller County, Missouri, was completed in 1959 and serves as a recreational resource for the local community. This private dam, with a height of 27 feet and a storage capacity of 58 acre-feet, is primarily used for recreational purposes, providing opportunities for activities such as fishing, boating, and wildlife viewing. Situated on the TR Tavern Creek, the dam's low hazard potential and "Not Rated" condition assessment make it a safe and enjoyable destination for water resource and climate enthusiasts.
Managed by private owners, Groff Upper Dam does not fall under state jurisdiction or regulation, allowing for flexible operation and maintenance. With a surface area of 4 acres and a drainage area of 77 square miles, the dam contributes to the local ecosystem and water supply. Despite lacking detailed information on certain aspects such as spillway type and outlet gates, the dam's structural integrity and historical significance add to its appeal for those interested in water resource management and environmental conservation.
While Groff Upper Dam may not have the same recognition as larger, federally-owned dams, its role in providing recreational opportunities and supporting the local ecosystem should not be overlooked. With its tranquil setting and potential for future improvements in emergency preparedness and risk assessment, this Earth-type dam offers a valuable case study for sustainable water resource management in the face of changing climate conditions.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Groff Upper Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Gasconade River At Jerome | 1,360 cfs | → |
| Osage River Near Bagnell | 37,000 cfs | → |
| Little Piney Creek At Newburg | 168 cfs | → |
| Osage River Below St. Thomas | 37,300 cfs | → |
| Gasconade River Near Hazelgreen | 2,320 cfs | → |
| Big Piney Below Ft. Leonard Wood | 318 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Groff Upper Dam.
Boat launches
- Riverside Road 17740, Pulaski County
- Logan Road Pulaski County
- River Road 218, Tuscumbia
- Kings Bluff Drive 201, Miller County
- Running River Drive Pulaski County
Campgrounds
- Lake Of The Ozarks State Park
- Roubidoux Springs
- Lake Of The Ozarks Military
- Piney River Military - Fort Leonard Wood
- Paydown Access - Mdc
- Lane Spring Recreation Area
Track Groff Upper Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Groff Upper Dam
Where does the data for Groff Upper Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Groff Upper Dam.